Attention turns to naturally occurring methane seepage
Article first published online: 19 OCT 2006
©2001. American Geophysical Union. All Rights Reserved.
Eos, Transactions American Geophysical Union
Volume 82, Issue 40, page 457, 2 October 2001
How to Cite
2001), Attention turns to naturally occurring methane seepage, Eos Trans. AGU, 82(40), 457–457, doi:10.1029/01EO00275., , and (
- Issue published online: 19 OCT 2006
- Article first published online: 19 OCT 2006
Methane is the most abundant organic compound in the Earth's atmosphere. As a powerful greenhouse gas, it has implications for global climate change. Sources of methane to the atmosphere are varied. Depending on the source, methane can contain either modern or ancient carbon. Methane exiting from swamps and wetlands contains modern carbon, whereas methane leaking from petroleum reservoirs contains ancient carbon. The total annual source of methane to the atmosphere has been constrained to about 540 teragrams (Tg) per year “Cicerone and Oremland, 1988”. Notably absent from any identified sources is the contribution of geologically sourced methane from naturally occurring seepage.